Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 667th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 667th masinag 🇮🇹 868 71 6 Oct 2024 667th KasperKivimaeki 🇫🇮 868 71 27 Mar 2025 679th AlephSquirrel 867 80 20 Apr 2023 679th ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 681st nwellnhof 🇩🇪 866 53 4 May 2022 681st GrayJoKing 🇦🇺 866 53 6 May 2022 683rd DialFrost 🇸🇬 866 86 24 Oct 2024 683rd stefangimmillaro 866 86 14 Jan 2025 685th dieggsy 866 97 8 Oct 2024 685th edsrzf 🇳🇿 866 97 8 Dec 2024 687th lukehewittvandy 866 135 18 Jul 2022 687th OriEy 866 135 27 Apr 2023 687th Maximizer02 866 135 8 Jun 2024 687th 0dyse 866 135 23 Apr 2025 691st jacobly0 🇺🇸 866 153 26 Sep 2023 692nd Andriamanitra 🇫🇮 864 54 21 Jul 2022 692nd jared-hughes 864 54 12 Sep 2022 692nd OhmNomNom 864 54 7 Oct 2022 692nd olleicua 🇺🇸 864 54 21 Jan 2024 692nd LostSyntax21 🇬🇧 864 54 12 Mar 2025 692nd AbrahamJLR 864 54 21 days ago 698th Shanethegamer 🇺🇸 864 70 12 Dec 2022 698th Alessandro-Balconi 🇮🇹 864 70 26 Dec 2022 700th DialFrost 🇸🇬 862 64 10 Jul 2024 701st Grrisly 862 114 25 Mar 2024 702nd mtirado1 861 75 13 Aug 2022 703rd Steffan153 🇫🇮 861 82 23 Feb 2023 704th MeWhenI 🇻🇦 861 85 27 Jun 2022 704th Shanethegamer 🇺🇸 861 85 15 May 2023 706th tomh1012 861 90 5 May 2022 706th deadp4nda 🇩🇪 861 90 26 Apr 2024 706th 123mjb 861 90 46 hours ago 709th TylerBloom 861 96 22 Mar 2024 710th shellbertt 🇨🇦 861 98 9 May 2022 710th iakolzin 861 98 26 May 2022 710th Betuaredead 861 98 5 Jan 2023 710th oceko 861 98 19 Feb 2024 710th dokutan 861 98 17 Mar 2024 710th cuzdav 861 98 4 May 2025 716th MeWhenI 🇻🇦 860 154 10 Oct 2023 717th GrayJoKing 🇦🇺 859 56 15 Jan 2024 717th AlephSquirrel 859 56 21 Jan 2024 719th Setvizan 859 62 12 Jan 2023 719th GreenBeansAgainstVeganism 859 62 13 Jan 2023 719th arctouch-cristiannevianna 859 62 3 Apr 2023 719th Corxldyphik 859 62 11 Apr 2023 719th Blockyheadman 859 62 1 Nov 2023 719th ollyspooner 859 62 22 Nov 2023 719th itserasmus 859 62 25 Jan 2024 719th Jacob385 859 62 13 Mar 2024 719th junkondo-jp 859 62 30 Jun 2024 719th ShiraJoseph 🇺🇸 859 62 1 Mar 2025 729th yzhs 🇩🇪 859 65 16 Jun 2022 729th rollershutter 859 65 9 Sep 2022 729th bac0id 859 65 26 Sep 2023 729th mossiegoat 859 65 17 days ago 733rd ovs-code 🇩🇪 859 133 8 Jul 2024 734th crizin 🇰🇷 859 136 9 Sep 2023 734th TheZwierzLF 🇵🇱 859 136 23 days ago 736th ulucs 858 35 8 May 2022 736th bstrat 858 35 6 Jun 2024 736th wh3n3v3r 🇨🇿 858 35 18 Nov 2024 739th Andriamanitra 🇫🇮 858 67 26 Apr 2023 740th steffan-polygolf 858 73 23 Feb 2023 740th MWI-polygolf 858 73 6 Dec 2023 740th HumanoidCPU 858 73 7 May 2024 743rd Steffan153 🇫🇮 858 78 4 Feb 2023 744th 5quiwyrm 857 52 4 Sep 2022 744th MeWhenI 🇻🇦 857 52 28 Jan 2023 744th Feniske 🇫🇷 857 52 7 Nov 2023 744th dcgjb 857 52 29 Jan 2024 744th JPRuskin 🇬🇧 857 52 7 Apr 2025 744th IISResetMe 857 52 7 Apr 2025 744th Ripick 857 52 23 days ago Prev 676–750 of 3,132 Next